\documentclass[]{article}
\setlength{\pdfpagewidth}{8.5in} \setlength{\pdfpageheight}{11in}
\begin{document}
\begin{tabular}{lc} \hline
 & (1) \\\
 & REG \\\
VARIABLES & gr\_pop \\\ \hline
 &  \\\
p1871cotshr & -0.165** \\\
 & (0.0673) \\\
p1881cotshr & 0.0296 \\\
 & (0.0756) \\\
p1891cotshr & 0.0307 \\\
 & (0.104) \\\
p1901cotshr & -0.0902 \\\
 & (0.123) \\\
Constant & 0.204*** \\\
 & (0.0121) \\\
 &  \\\
Observations & 275 \\\
Number of loc\_code & 55 \\\
 R-squared & 0.199 \\\ \hline
\multicolumn{2}{c}{ Robust standard errors in parentheses} \\\
\multicolumn{2}{c}{ *** p$<$0.01, ** p$<$0.05, * p$<$0.1} \\\
\end{tabular}
\end{document}
